I was alive and well in those days. For most of the time when we were paying off our PPOR, interest rates were 12 to 14%. They were only ever higher than that for a year or so, as far as I remember.
We know of people who fixed at 15% for ten years. That is a big ouch.
In our case, Suncorp offered for us to fix for one year I think it was at about 16 or 17%. At the same time the govt brought in a short-term relief for low income earners or families or whatever we were classified as but by the time it got off the ground, the rates started falling again.
We were on one pathetic income, with two young kids (one with a disability) and I was too stressed to work anyway. Hubby was given a second job (approx. two hours a night) working for one of the company directors in his second business, which was all we needed to pull us through.
By the time we had gotten used to the higher payments, they started to reduce again. We were not investing in those days, but we paid off a 30 year mortgage in 12 before we started using the equity to purchase new cars and other goodies.
Mind you 16% interest on a $68,ooo mortgage with a $20K per annum income wasn't as scary as what FHBs are spending these days.